Improvement in cotton-gins



L. CAMPBELL.

Cotton Gin.

Patented Jan; 10, 1854.

N4 PETERS. Pmmunm n her, Waihmglull.

NITED STATES.

PATENT" GFFIICE.

LEONARD CAMPBELL, OF COLUMBUS, 'MISSISSIPPL IMPROVEMENT IN COTTON-GINS.

Specification forming part of Letters Patent N0. l0,40l, dated January 10, 1854.

T0 at whom it may concern.-

Be it known that I, LEONARD CAMPBELL, of Columbus, in the county of Lowndes and State of Mississippi, have invented a new and useful Improvement in Ootton-Gins; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, formingpart of this specification, in which Figure '1 is an external side elevation of the machine, showing the arrangement of the gearing for operating the ,saws and brush fan. Fig. 2 is a vertical longitudinal section through the center of the machine. Fig. 3 is a detached view of the stationary concave which serves as a brush for more perfectly stripping the cotton of foreign matter in its passage'from the hopper and saws to the fan-brush.

Similar letters of reference in each of the several figures indicate corresponding parts.

This invention relates to a new and useful improvement in cotton-gins, whereby they are rendered more effectual in their action upon the cotton, and all foreign and extraneous matter can be separated from the lint in a more perfect manner than what it has heretofore been by the gins in use; and it consists in the employment of a peculiarly-constructed intermediate concave between the revolving fan -brush and ginning -saws, the said concave being set vertically for the fan-brush to revolve in, and having a series of slots cut through it for the saws to work in and carry the cotton through to the brush-fan, the

sides of the slots being covered or set with bristles or other elastic substances, which project from the concave and serve, as the-saws force the ginned cotton through the slots, to further strip the cotton of all remaining impurities or foreign matter which the saws fail to remove, and render it fit to pass down to k the lower horizontal edge of the concave, which is set with brushes, to be spread out smooth and even, or have the uneven ragged appearance given it by the ginning-saws removed by said brushes and the brush-fan operating upon it just before it escapes, it, after thus being prepared, passing up overall inclined way by the blast of the fan-wheel, and discharged into a proper receptacle atone end of the machine, the dirt, 850., falling down through the center of the machine, and the ordinary way.

seed being conducted into a proper receiver at the end opposite that where the lint is discharged.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A- represents the frame of the gin, which may be constructed as shown in the drawings, or otherwise. j

B B are the ginning-saws, and O is the brushfan. These are arranged and operated in the D is thehopper through which the cotton is fed, it falling upon the grated frame E, as shown by red color in Fig. 2.

F is the intermediate concave placed between the saws and brush-fan O, in the manner shown in Fig. 2. This concave has a se ries of slots, a a, for the saws to work in, and for the cotton to pass through as it passes to thebrush-fan O. The sides of these slots are covered with bristles or other yielding substances, b b, as seen in Figs. 2 and 3, these substances serving to strip the cotton of all re maining dirt and seed which the saws may fail by metal plates 0 c, as seen in Figs. 2 and 3. r

G is a concave top for preventing a current of air passingdown toward the ginning portion of the machine and scattering the seed and lint. The saws are driven by the pulley H, through the band I, which passes from the pulley H to the speed-regulating pulley J, and

from thence passes to the pulley Kon the shaft of the brush-fan, this fan being set in motion by said pulley and band. The saws and brushfan revolve together, the former operating upon the cotton as it is fed in at the hopper D, and strip it of its seed, the saws carrying the cotton through the slots in the grated frame F, and through the slots in the concave F, to be further operated upon by the brushfan and concave, the seed falling down through the spout d of the hopper, as seen in Fig. 2;

then up over the inclined way L, from whence it passes into a proper receiver.

I do not claim the use of brushes suspended in a position so as to allow them to hang loosely between the ginning-saws; but

NVhat I do claim as my invention, and desire to secure by Letters Patent, is-

1. The concave brush-ribs F, and concave brush M, in combination with the brush-wheel O, for the purpose of scouring the nap (which is formed by the ginning-saws B) out of the cotton, and at the same time remove all impurities or foreign substances from it. Said ribs F are each of them provided with two rows of short, stnmpy bristles, which are secured on the inner edges of said ribs, as described.

2. The concave plate G, for the purpose of regulating the current of air which passes between said plate and the wheel 0, substalr tially as herein described.

J os. \V. PIOKETT, OHAs. D. BONSALL. 

